// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

namespace SixLabors.ImageSharp.Formats.Webp;

/// <summary>
/// Enum for the different alpha filter types.
/// </summary>
internal enum WebpAlphaFilterType
{
    /// <summary>
    /// No filtering.
    /// </summary>
    None = 0,

    /// <summary>
    /// Horizontal filter.
    /// </summary>
    Horizontal = 1,

    /// <summary>
    /// Vertical filter.
    /// </summary>
    Vertical = 2,

    /// <summary>
    /// Gradient filter.
    /// </summary>
    Gradient = 3,
}
